PEP8 fix
PEP8 fix


Former-commit-id: c174ba532e412cb5c8febf1131eb051b90e0b19e [formerly dab414d18151f8ed6bf81b89940d41c2956add67]
Former-commit-id: 6f5ac7c3146d62bc2bf2e0de16685ee77b23e5ef
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine